<template>
<div class="auth-page">
  <div class="container page">
    <div class="row">

      <div class="col-md-6 offset-md-3 col-xs-12">
        <h1 class="text-xs-center">{{isLogin ? 'Sign in' : 'Sign up'}}</h1>
        <p class="text-xs-center">
          <!-- <a href="">Have an account?</a> -->
          <nuxt-link v-if="isLogin" to="/register">Need an account?</nuxt-link>
          <nuxt-link v-else to="/login">Have an account?</nuxt-link>
        </p>

        <ul class="error-messages" >
          <template v-for="(messages, field) in errors">
            <li v-for="(message, index) in messages" :key="index">
              {{field}} {{message}}
            </li>
          </template>
          
        </ul>

        <form @submit.prevent="onSubmit">
          <fieldset class="form-group" v-if="!isLogin">
            <input class="form-control form-control-lg" v-model="user.username" type="text" placeholder="Your Name" required>
          </fieldset>
          <fieldset class="form-group">
            <input class="form-control form-control-lg" v-model="user.email" type="email" placeholder="Email" required>
          </fieldset>
          <fieldset class="form-group">
            <input class="form-control form-control-lg" v-model="user.password" type="password" placeholder="Password" required minlength="8">
          </fieldset>
          <button class="btn btn-lg btn-primary pull-xs-right">
            {{isLogin ? 'Sign in' : 'Sign up'}}
          </button>
        </form>
      </div>

    </div>
  </div>
</div>
</template>

<script>
import { login, register } from "@/api/user"
// 只在客户端运行时导入
const Cookie = process.client ? require('js-cookie') : undefined

export default {
    name: 'LoginPage',
    middleware: 'notAuthenticated',
    computed: {
      isLogin () {
        return this.$route.name === 'login'
      }
    },
    data () {
      return {
        user: {
          username: '',
          email: "",
          password: ""
        },
        errors: {} //错误信息
      }
    },
    methods: {
      async onSubmit () {
        try {
          // 提交表单请求登录
          const { data } = this.isLogin 
          ? await login({
            user: this.user
          })
          : await register({
            user: this.user
          })

          // console.log(data)
          this.$store.commit('setUser', data.user)

          // 为了防止刷新导致数据丢失，需要数据持久化
          Cookie.set('user', data.user)

          // 跳转到首页
          this.$router.push('/')
        } catch (error) {
          this.errors = error.response.data.errors
        }
      }
    }
}
</script>

<style>

</style>